H1 2023 EBITDA Overview and Oyu Tolgoi Outlook

Finding better ways to provide the materials the world needs Growing our North American aluminium business 20000 Kg 3742 AP60 aluminium smelter¹ investing $1.1bn Matalco joint venture Casthouse expansions Arvida, Alma Launching into recycled aluminium supply 1AP60 technology generates approximately 1.6 tonnes of CO2e per tonne of aluminium produced, compared to approximately 3.2 tonnes of CO₂e per tonne of aluminium for the Arvida smelter's current technology, and over 12 tonnes of CO2e per tonne of aluminium for the industry average Rio Tinto ©2023, Rio Tinto, All Rights Reserved 22

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